2a and b8
A nut, flat on top and bottom having 6 flat sides. For items which have internal tapered or straight (parallel) pipe threads, specific electrical conduit size designation, and which when installed, provide a method of tightening to lock the connection, see locknut, electrical conduit. See also locknut, tube fitting. For items having a thickness (or height) exceeding two times the width across the flats, use post, electrical-mechanical equipment. (when height or thickness and/or width across the flats is designated as a tolerance dimension, the maximum dimension will be used to determine compliance.)
Classification: Copper screws, nuts, bolts, rivets, and other fasteners not threaded
NSN 6145-01-195-7329
NSN 7035-01-395-7851
NSN 6610-01-463-5368
NSN 5905-01-240-0449
NSN 6150-01-172-3368
NSN 5855-01-523-1177
NSN 6620-00-728-3445
NSN 7035-00-096-9986
NSN 2925-01-236-3547
NSN 5895-00-925-5810
NSN 5915-00-007-3813
NSN 2925-00-456-7627